You'll struggle to find a laser printer cheaper than an inkjet.
If you are only doing very occasional printing I'm not sure it's worth it.
Laser jet printers use stuff called toner, which usually is more economical than ink (unless you do colour), but if you aren't printing much ...
Actually, you can still print via a wire with a wifi enabled printer - I do just that for work printing. My printer is connected to my wifi and I mainly use that, but owing to security issues a can't do that from my work laptop, so I have a wire permanently plugged into the printer too, and just attach the laptop to the other end when I need to.
I bought a HP wireless printer and managed to set it up easily which is a miracle! I now pay just £1.99 per month for ink and they send me new ones automatically when I have used so many copies. Some months I do a lot more and you just pay so much a month for extra copies but mostly there is enough for me.